anyone have a good GM part number for this part? it's the pipe that runs in front of the engine that the upper radiator hose.. just picked up a very used and abused 98 Cavvy that has that pipe rusted out and i need to find a replacement..

alternately, can the 97 and older thermostat housing in the 97 and older location be used instead? that stupid pipe just seems like a bad idea..

ok.. guess the thermostat isn't there.. but i did find an exploded diagram that shows the part.. item #4.. anyone know the first two digits of the part number? they just list it as **577029, so i need to know what the " ** " numbers are..

http://www.gmpartseast.com/Page_Product/PartList.aspx?MakeUrl=chevy&CatalogUrl=1998-cavalier&ComponentCode=MJ0105601&SectionCode=01&EngineCode=&TransmissionCode=&ModelCode=1JC37&Vin=&P roductionDate=&VehicleInfo=&CatalogCode=15J&Year=